1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marina86 [1]
3 years ago
15

Let the random variable X denote the number of network blackouts in a day. The

Mathematics
1 answer:
faltersainse [42]3 years ago
6 0
E(X) = 0(0.7) + 1(0.2) + 2(0.1) = 0.2 + 0.2 = 0.4
The expected daily loss due to blackouts = 0.4 * $500 = $200

Var(X) = 0(0.7 - 0.4)^2 + 1(0.2 - 0.4)^2 + 2(0.1 - 0.4)^2 = 0.04 + 0.18 = 0.22
The expected daily variance due to blackouts = 0.22 * $500 = $110
You might be interested in
A water tank is composed of a cylinder and 2 half spheres
Roman55 [17]
We will not know the answer because you didn't tell us the radius or anything
8 0
3 years ago
What is the answer to 2h/15=20?
GarryVolchara [31]
2h/15=20 so the answer to h would be h=150
7 0
3 years ago
The diameter of a circle on
Rama09 [41]
I’m pretty sure it’s c
6 0
3 years ago
Find the number of rooms per hour that Jake, Lionel, and Donald can paint working together if t is 6 hours.
lara31 [8.8K]
You dont have a complete question

7 0
3 years ago
Please help with question 6, 7, 8, and 9 about rational and irrational numbers
aliina [53]
6. When we multiply two surdic integers, we can leave it into one big surd.
For instance, if we have:

\sqrt{a} \cdot \sqrt{b}, we can simplify it down to one uniform square root sign, \sqrt{ab}.

So, we can say: 3\sqrt{2} \cdot 8\sqrt{18} = 24\sqrt{36}, which is a rational root, because the square root of 36 can be converted into an integer, namely 6 and -6.

Hence, it is a rational root.

7. The summation, on the other hand, cannot be simplified any further, so it will stay as irrational. This is because √2 is already an irrational root, and adding it onto a number that is rational will stay as irrational.

8. Once again, the summation cannot be simplified. We can only simplify by factoring like terms. Hence, this must be irrational.

9. Even if it is in fractional notation, √5 can never be a rational number because no two integers when multiplied by itself will give 5. So, even if it is written in fractional form, they cannot be rational if there is an already irrational term in it.
4 0
3 years ago
Other questions:
  • A class of 40 students elected a class president. There were 12 votes for Candidate A, and 18 votes for Candidate B. The remaini
    5·2 answers
  • What is equivalent to 4/21
    7·2 answers
  • Identify an outlier in the data set below, if one exists.
    15·1 answer
  • Answer this please, need by 7:00 AM, and thx if you answered
    6·1 answer
  • Help<br> Due asap <br> Show workings
    15·2 answers
  • an object is traveling at a steady speed of 10 1/5 km/h. how long will it take the object to travel 4 4/5
    14·1 answer
  • Which point is located at (2, -5)?
    15·1 answer
  • 17. A person spends 20% of his income towards
    12·1 answer
  • Can y’all pls help me I need help!!
    5·1 answer
  • 5.000g rounded to the nearest whole gram
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!